ABSTRACT The structural and electrical properties of ionic metal‐alkanoate nanocomposites obtained based on a cadmium octanoate matrix with individual carbon gold nanoparticles (NPs) as well their combination are studied. Carbon NPs were chemically synthesized within the smectic A phase Cd +2 (C 7 H 15 COO − ) 2 , which served well‐ordered nanoreactor. Scanning electron microscopy (SEM) transmission (TEM) data provide information location allow estimation sizes inside glassy liquid...

Metal alkanoates combine simple chemical structures and a versatility of condensed states matter they exhibit. Solid crystals, plastic lyotropic thermotropic ionic liquid liquids, mesomorphic glasses, Langmuir–Blodgett films are just few examples. Liquid crystal phases metal the most intriguing because represent non-conventional class materials known as metallomesogens. Structural, thermal, transport properties well documented reviewed. On contrary, optical nonlinear-optical these very...

Recordings of dynamic holograms with microsecond relaxation times under the action nanosecond laser pulses are obtained in composites on base a novel class liquid crystals (LCs) ionic metal-alkanoates. Holographic parameters and characteristics measured for doped lyotropic LC, sandwichlike cells (consisting dye layer LC), colored smectic glasses. The structure materials is investigated by use small-angle x-ray technique. mechanism resonance nonlinearity photosensitive centers mechanisms...

Spectral and nonlinear optical properties of cadmium octanoate composites containing CdSe nanoparticles (NPs) have been studied by using absorption spectroscopy laser scanning technique (Z-scan). NPs are chemically synthesised in thermotropic ionic liquid crystal (ILC) phase which is used as nanoreactor. Anisotropic glassy nanocomposites obtained the rapid cooling ILC to room temperature. The sizes determined from spectra. thermo-optical nonlinearity new characterised extremely large value...

Abstract The electrical properties of ionic smectic liquid crystal (ISLCs), specifically, (i) oriented and non‐oriented samples lyotropic ISLC potassium caproate (ii) thermotropic cobalt decanoate, are investigated in detail. conductivity is higher than that isotropic electrolytes. A giant anisotropy the decanoate observed. mobility charge carriers measured for first time. unusual ISLCs, which governed by their layered structure, show they have application potential optoelectronic devices.

CdSe nanoparticles (NPs) are chemically synthesized in thermotropic ionic liquid crystalline (LC) phase of cadmium octanoate that was used as a nanoreactor. The nanocomposite samples obtained by the rapid cooling LC to room temperature. Observed doublet structure absorption spectra nanocomposites is characteristic for two-dimensional nanoplatelets (NPLs). thicknesses NPLs 1.6, 1.9 and 2.3 nm determined from spectra, correspond 4, 5 6 monolayers, respectively. Induced simultaneous bleaching...

Although isotropic glass materials are ubiquitous in everyday life, the properties and applications of anisotropic liquid crystal glasses stable at room temperature still insufficiently explored. In this paper, nonlinear-optical unconventional nanocomposites made mesogenic cadmium octanoate bimetallic nanoparticles reported. Two types (Ag/Au core – Au shell Ag/Au homogeneous alloy) synthesised utilising an ionic phase as a nanoreactor. A characterisation studied samples is performed by means...

The nonlinear optical response of anisotropic smectic glasses based on cobalt alkanoates has been studied using dynamic holography. Laser-dynamic gratings induced by the action nanosecond laser pulses were observed and analysed for such materials. It was found that cubic nonlinearity all had an electronic origin in range, caused polarisation alkanoate complexes. Fundamental (refractive index absorption coefficient) (nonlinear susceptibility polarisability) parameters mesomorphic could be...

Quantum confinement effect and its influence on absorption photoluminescence spectra of CdSe nanoparticles chemically synthesized in thermotropic ionic liquid crystal cadmium octanoate are studied. It was found out that the spectral resolution grows with decrease temperature, so it becomes possible to distinguish band-edge luminescence from bands associated presence surface defects. Obtained were analyzed theoretically energy diagrams for samples 1.8 nm 2.6 calculated.

Structural and optical properties of cadmium alkanoates nanocomposites with sulfide (CdS) quantum dots (QDs) have been studied by using various techniques: small angle X-ray scattering, transmission electron microscopy, absorption spectroscopy photoluminescence. QDs are chemically synthesised in thermotropic ionic liquid crystalline (ILC) phase that smectic-type ordering used as nanoreactors. Anisotropic glassy obtained rapid cooling the ILC to room temperature. For synthesis CdS capronate...

The main goal is to study the structural and dielectric characteristics of advanced composite materials based on ionic metal alkanoates with various types nanoparticles. matrix Cd+2(C7H15COO)−2 formed as a result reaction cadmium carboxylate groups alkanoate (C7H15COO)−2 used for synthesis At room temperature, crystalline material represents multilayer structure each layer thickness 1.8 nm. However, when heated in temperature range from 100 °C 180 °C, undergoes phase transition into liquid...

This paper reports the modification of nonlinear-optical properties very common yet often overlook glass-forming mesogenic materials (metal alkanoates) by using several types nanoparticles including metal (silver and gold), bimetallic, carbon dots.

In this paper, we performed optical and nonlinear characterization of the newly designed anisotropic glassy materials composed mesomorphic cobalt octanoate noble metal nanoparticles. Both host (the octanoate) dopant (noble nanoparticles) absorb light in near-UV–visible region spectrum. This feature allowed us to explore an impact such overlapped absorption on nonlinearity devised "guest–host" system at off-resonance frequency by means femtosecond laser scanning technique (Z-scan). Minor...

In this paper, we report the synthesis and characterization of unconventional nanocomposites made bimetallic nanoparticles dispersed in a liquid crystal glass. Core-shell (Ag/Au or Au/Ag) Ag-Au nanoalloys are synthesized using cadmium alkanoate glass-forming crystals as nanoreactors. Optical spectra produced glassy exhibit distinctive absorption peak due to surface plasmon resonance. addition, these unusual materials demonstrate strong nonlinear–optical response probed by means Z-scan...

Mechanisms of the fast optical nonlinearity are studied in two types cells based on lyotropic ionic liquid crystals (LILC) metal alkanoates. They (I) bi-layer cell, which consists a thin dye film covered by LILC, and (II) LILC with electrochromic impurity (viologen). Applying dc electric voltage to cell II leads adsorption viologen redox products formation nanosized layer cathode. The dynamic holographic technique pulsed laser radiation nanosecond duration was used investigate nonlinear...

The unique properties of nanomaterials along with their suitability for photonics applications can be explored by dispersing nanodopants in a transparent glass matrix. As rule, the creation nanocomposites involves synthesis nanoparticles followed dispersion host. This laborious two-step process simplified if glass-forming liquid crystals are used as nanoreactor and host In this paper, we discuss successful realization approach using mesogenic metal alkanoates fabrication unconventional...

Abstract The dynamic holography in new composite materials based on a novel class of metal-alkanoate ionic liquid crystals (ILCs) is studied experimentally and theoretically. composites are formed as dielectric dye film covered by lyotropic ILC smectic glasses with doped molecules. gratings created nanosecond pulses double frequency Nd:YAP laser, the recording demonstrates fast erasure time residual thermal gratings. nonlinear optical properties determined resonance nonlinearity...